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| author | Sage Weil <sage@inktank.com> | 2012-10-24 16:12:58 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-05 09:56:50 +0100 |
| commit | b6f8fbbad7bf2511aea493b0dc7be92e3b5c5a8d (patch) | |
| tree | 7ba05824c6294459d31a7e6f157e385cadd6bcb5 /fs/drop_caches.c | |
| parent | a407c28651969f9e34fd51ea0415886b70e5c991 (diff) | |
libceph: avoid NULL kref_put when osd reset races with alloc_msg
commit 9bd952615a42d7e2ce3fa2c632e808e804637a1a upstream.
The ceph_on_in_msg_alloc() method drops con->mutex while it allocates a
message. If that races with a timeout that resends a zillion messages and
resets the connection, and the ->alloc_msg() method returns a NULL message,
it will call ceph_msg_put(NULL) and BUG.
Fix by only calling put if msg is non-NULL.
Fixes http://tracker.newdream.net/issues/3142
Signed-off-by: Sage Weil <sage@inktank.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/drop_caches.c')
0 files changed, 0 insertions, 0 deletions